From ea88bb5d0aa10af1bcb019b68e954da2edc0d2a9 Mon Sep 17 00:00:00 2001
From: konstin <konstin@mailbox.org>
Date: Mon, 4 Aug 2025 12:20:10 +0200
Subject: [PATCH] Fix relative README rewrite in source distributions

Previously building the hello-world example crate through a source distribution would fail.

Test plan (after #2704):

```
cd test-crates/hello-world
maturin build --sdist
uv build --wheel target/wheels/hello_world-0.1.0.tar.gz
```
---
 Changelog.md               |  1 +
 src/source_distribution.rs | 25 ++++++++++++++-----------
 tests/run.rs               |  1 +
 3 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/Changelog.md b/Changelog.md
index b5cd431ad..1f9e6630d 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 * Fix adding `project.license-files` to source distributions.
+* Fix relative Readme rewrite of the root crate in source distributions.
 
 ## [1.9.2]
 
diff --git a/src/source_distribution.rs b/src/source_distribution.rs
index 98d331eaf..0dc7a2a50 100644
--- a/src/source_distribution.rs
+++ b/src/source_distribution.rs
@@ -502,17 +502,8 @@ fn add_cargo_package_files_to_sdist(
         .unwrap()
         .strip_prefix(&sdist_root)
         .unwrap();
-    add_crate_to_source_distribution(
-        writer,
-        manifest_path,
-        root_dir.join(relative_main_crate_manifest_dir),
-        None,
-        &known_path_deps,
-        true,
-        false,
-    )?;
     // Handle possible relative readme field in Cargo.toml
-    if let Some(readme) = main_crate.readme.as_ref() {
+    let readme_path = if let Some(readme) = main_crate.readme.as_ref() {
         let readme = abs_manifest_dir.join(readme);
         let abs_readme = readme
             .normalize()
@@ -531,7 +522,19 @@ fn add_cargo_package_files_to_sdist(
                 .join(readme.file_name().unwrap()),
             &abs_readme,
         )?;
-    }
+        Some(abs_readme)
+    } else {
+        None
+    };
+    add_crate_to_source_distribution(
+        writer,
+        manifest_path,
+        root_dir.join(relative_main_crate_manifest_dir),
+        readme_path.as_deref(),
+        &known_path_deps,
+        true,
+        false,
+    )?;
 
     // Add Cargo.lock file and workspace Cargo.toml
     let manifest_cargo_lock_path = abs_manifest_dir.join("Cargo.lock");
diff --git a/tests/run.rs b/tests/run.rs
index c093f433a..451605898 100644
--- a/tests/run.rs
+++ b/tests/run.rs
@@ -648,6 +648,7 @@ fn workspace_members_non_local_dep_sdist() {
         edition = "2021"
         description = "Implements a dummy function (get_fortytwo.DummyClass.get_42()) in rust"
         license = "MIT"
+        readme = "README.md"
 
         [dependencies]
         pyo3 = { version = "0.25.0", features = [